CN207798767U - A kind of simple gas density measuring device - Google Patents
A kind of simple gas density measuring device Download PDFInfo
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- CN207798767U CN207798767U CN201721375473.5U CN201721375473U CN207798767U CN 207798767 U CN207798767 U CN 207798767U CN 201721375473 U CN201721375473 U CN 201721375473U CN 207798767 U CN207798767 U CN 207798767U
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- inner chamber
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- syringe
- head space
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Abstract
The utility model discloses a kind of simple gas density measuring devices, including ml headspace bottle and sampling needle, the ml headspace bottle includes bottle and the head space lid that is closed together on the bottle, and gas absorbing liquid is housed in the bottle, and the sampling needle passes through the head space lid to be inserted into the ml headspace bottle.The embodiment of the utility model can remove the instrument for carrying the Large heavies such as absorber, sampler from.Absorbing liquid, ml headspace bottle and needle tubing only need to be taken, you can complete entire sampling, absorption process.Lightly, easy to carry, due to the Seal Design of ml headspace bottle, does not have to concern and leaked into air when adding reaction solution, safer environmental protection.
Description
Technical field
The utility model is related to gas concentration detection fields, are specifically related to a kind of simple gas density measuring device.
Background technology
Measure specific gas ingredient in air, it usually needs absorb a certain amount of air volume using absorbing liquid, then pass through
The method of titration or colorimetric measures the concentration of object gas.
Such as the measurement (GB/T 18204.24-2000) of gas concentration lwevel in national standard, needs to use constant flow sampler, inhale
Closed tube, buret, iodine flask.Wherein sampling step needs to take an absorption tube, and 50ml barium hydroxide absorbing liquids are added, with
0.3L/min flows sample 5-10min.After sampling, absorption tube send laboratory, removes intermediate sand stamen pipe, jumps a queue and stand 3h, make carbon
Sour precipitated barium is complete, and Aspirate supernatant 25ml is added 2 drop phenolphthalein indicators, is titrated to oxalic acid titer molten in iodine flask
The coloring of liquid is become colorless by red, records the volume of consumed oxalic acid standard solution.
For another example in national standard ammonia concentration measurement (GB/T 18204.25-2000), need to use larger bubbles absorption tube,
Air sampler, color-comparison tube, spectrophotometer etc..Wherein sampling step needs the large size with a built-in 10ml absorbing liquid
Bubble absorption tube, with 0.5L/min flows, gas production 5L.Sample solution is transferred in color-comparison tube, with a small amount of water absorption
Pipe merges, and it is 10ml to make total volume.Be added 0.5ml salicylic acid solutions, add 0.1ml sodium nitroprussides solution and
0.1ml liquor natrii hypochloritis, mixing place 1h at room temperature.Carry out absorbance test.
Above-mentioned gas method for measurement of concentration has the disadvantage that：1) it needs to use air sampler and absorber, it is relatively large,
It is heavier, not Portable belt.2) need to take back laboratory after having absorbed and do further detection, can not scene complete operation.
Utility model content
There is provided that one kind is convenient for carrying, scene goes out result and can the purpose of the utility model is to overcome the above problem
Simplify the simple gas density measuring device of original flow.
To achieve the above object, the technical scheme adopted by the utility model is that：A kind of simple gas concentration detector, including
Ml headspace bottle and needle tubing sampling needle, the ml headspace bottle is using the head space that sealing structure includes bottle and is closed together on the bottle
Lid, the bottle is interior to be equipped with gas absorbing liquid, and the sampling needle passes through the head space lid to be inserted into the ml headspace bottle.
Preferably, head space lid include head space lid, sealing ring made of elastic material, the head space lid is equipped with interior spiral shell
Line, the sealing ring are set to the top in the head space lid, and circle under the sealing ring includes upper ring and is round is described
The interior nose circle of upper circle it is extending radially downward go out with it is described it is lower enclose the annular inner wall being connected, the outer nose circle of the upper circle is radially downward
Extend annular outer wall, the inner wall, the upper circle and the outer wall constitute an annular groove together, and the annular groove is for accommodating
The bottleneck of ml headspace bottle, the diameter of the annular groove are adapted with the diameter of bottleneck, and the head space lid upper inside wall is equipped with ring-like
Card slot.
Preferably, the tube wall of the sampling needle is equipped with scale.
Preferably, the bottle wall of the ml headspace bottle is equipped with scale.
Preferably, sampling needle includes outer syringe, and interior syringe, the outer syringe is interior to be equipped with first inner chamber, and the interior syringe is set
In first inner chamber, second inner chamber is equipped in the interior syringe, the first inner chamber is disconnected with each other with the second inner chamber, institute
It states outer syringe bottom end and is connected with syringe needle, the first inner chamber is connected with syringe needle respectively with the second inner chamber, in first inner chamber
Be slidably equipped with the first push rod, second inner chamber is slidably equipped with the second push rod, the first push rod and the second push rod slide over each other cooperation.
Preferably, the bottom end of first push rod is equipped with pushing block, and the pushing block is slidably installed in first inner chamber, on the pushing block
Equipped with slide opening, the bottom end of second push rod is equipped with push plate, and second push rod passes through slide opening and the first push rod to be slidably matched company
It connects, push plate is slidably matched with second inner chamber.
Preferably, the one end of the syringe needle far from liquid outlet is connected with cushion chamber, and the opening area of the cushion chamber is more than
The liquid outlet area of first inner chamber.
The beneficial effects of the utility model：
1. removing the instrument for carrying the Large heavies such as absorber, sampler from.Absorbing liquid, ml headspace bottle and needle tubing only need to be taken,
Entire sampling, absorption process can be completed.Lightly, easy to carry.
2. due to the Seal Design of ml headspace bottle, does not have to concern and leaked into air when adding reaction solution, safer environmental protection.
3. in sample phase, absorber is replaced with the ml headspace bottle equipped with absorbing liquid, it is small and exquisite and be convenient for carrying.
4. in sample phase, sampler is replaced with needle tubing, completes the quantitative sampling of air to be measured.
5. in the reaction detection stage, directly reaction solution can be drawn with needle tubing and be added, the ml headspace bottle of sample to be tested is housed, is not required to
In addition the glassware of color-comparison tube, iodine flask is used.
6. titration process can be completed directly with high-precision needle tubing and ml headspace bottle cooperation, original buret and iodine number can reach
The effect of bottle.
7, the sealing ring of the utility model head space lid can guarantee that bottle cap and bottle close fit, bottle cap and sealing ring setting exist
Technique is simplified together, and directly bottle cap is tightened on bottle and reaches sealing effect.
8, sampling needle can provide a variety of liquid measures and plurality of liquid and meanwhile injection and it is non-interference, be not in contact before the injection,
One sampling needle can be equipped with two different liquid simultaneously, without being used separately different sampling needles, reduce cost, one
Sampling needle can achieve the effect that multiple sampling needles, while difference can be arranged in the volume of each inner cavity, and injection volume can spirit
Setting living can also inject two kinds of liquid simultaneously, and injection volume can have low consumption of the liquid, big liquid measure, but injecting wall reading only needs one kind.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the head space lid lid of embodiment two and the structural schematic diagram in ml headspace bottle；
Fig. 3 is the structural schematic diagram of sealing ring in embodiment two；
Fig. 4 is the structural schematic diagram of two sampling needle of embodiment；
Fig. 5 is the cross-sectional view of Fig. 4；
Fig. 6 is the internal structure schematic diagram of the outer syringes of Fig. 4；
Fig. 7 is the structural schematic diagram of the first push rod；
Fig. 8 is the structural schematic diagram of the second push rod.
Specific implementation mode
The utility model is described in detail below in conjunction with the accompanying drawings, these attached drawings are simplified schematic diagram, only to show
Meaning mode illustrates the basic structure of the utility model, and the direction of this specific implementation is using the directions Fig. 1 as standard.
Embodiment 1
As shown in Figure 1, a kind of simple gas density measuring device, including ml headspace bottle 1, head space lid 2, needle tubing 3；Wherein ml headspace bottle
1 for filling absorbing liquid 4, it is preferable that head space lid 1 is non-threaded aluminum bottle cap, can be to avoid outside air using the mode of sealed connection
Into in ml headspace bottle, and add reaction solution when, avoid being leaked in air, safer environmental protection.It can be in the bottle wall of ml headspace bottle 1
Equipped with scale, so as to accurately measure the capacity of absorbing liquid.
Needle tubing 3 is set for extracting the under test gas in air and absorbing liquid 4 being squeezed into ml headspace bottle 1 on the tube wall of needle tubing 3
It is transversely provided with accurate scale, so as to accurately control the under test gas amount of extraction or the amount of absorbing liquid 4, certain needle tubing 3
The specification of different capabilities can also be set with the need.
The utility model surveys the operation principle of atmospheric carbon dioxide concentration using ml headspace bottle 1 and needle tubing 3：It will be inhaled with needle tubing 3
It receives liquid hydrogen barium monoxide 5ml and squeezes into ml headspace bottle 1, take out air to be measured with 50ml sampling needles 3, slowly squeeze into ml headspace bottle 1, and shake top
Empty bottle 1, makes air sample be come into full contact with absorbing liquid.It is repeated 3 times, squeezes into 150ml altogether.3h is stood, keeps barium carbonate sediment complete,
Aspirate supernatant 2.5ml is in another clean ml headspace bottle 1.2 drop phenolphthalein indicators are added with sampling needle 3, it will be careless with sampling needle 3
The coloring that standard acid solution is titrated to solution is become colorless by red, records the volume of consumed oxalic acid standard solution.It inhales simultaneously
It takes the unsampled barium hydroxide absorbing liquids of 2.5ml to make blank titration, records the volume of consumed oxalic acid standard solution.Measure room
Interior the carbon dioxide concentration in air to be measured is 0.037%.
Embodiment 2
As shown in Fig. 2~8, the head space lid 2, sampling needle 3 of the present embodiment are used with lower structure.
Head space lid 2 includes head space lid 21, sealing ring 22, and head space lid 21 is equipped with internal thread, and sealing ring is set to head space
Top in lid 21, is made of elastic material, is made of polythene material, and sealing ring 22 includes upper ring 221 and circle
Enclose 222 under shape, enclosed on this 221 interior nose circle it is extending radially downward go out with lower 222 annular inner walls 223 that are connected of circle, on this
The outer nose circle of circle 221 it is extending radially downward go out annular outer wall 224, the inner wall 223, circle 221 and the outer wall 224 are constituted together on this
One annular groove 225, the annular groove 225 are used to accommodate the bottleneck 11 of ml headspace bottle 1, and diameter is adapted with the diameter of bottleneck 11, push up
21 upper inside wall of empty lid is equipped with ring-like card slot 211, for installing the sealing ring 22.
Sampling needle 3 includes outer syringe 31, and interior syringe 32 is divided into first inner chamber 311 inside outer syringe 31, and interior syringe 32 is located at
In first inner chamber 311, second inner chamber 312 is equipped in interior syringe 32, first inner chamber 311 is disconnected with each other with second inner chamber 312,
31 bottom end of outer syringe is connected with syringe needle 33, and first inner chamber 311 is wanted to be connected to syringe needle 33 respectively with second inner chamber 312, first inner chamber
The first push rod 33 is slidably equipped on 311, second inner chamber 312 is slidably equipped with the second push rod 35, the first push rod 34 and the second push rod 35 are mutually
It is slidably matched, the bottom end of the first push rod 34 is equipped with pushing block 341, and pushing block 341 is slidably installed in 311 in first inner chamber, and pushing block 341 is equipped with
The bottom end of slide opening 342, the second push rod 35 is equipped with push plate 351, and the second push rod 35 is slidably matched across slide opening 342 with the first push rod 34
Connection, push plate 351 are slidably matched with second inner chamber 312.
The one end of syringe needle 33 far from liquid outlet is connected with cushion chamber 331, and the opening area of cushion chamber 331 is more than first inner chamber
311 liquid outlet area.
Certifiable bottle cap and bottle close fit is made by elastic material in the sealing ring of the head space lid of the present embodiment, bottle cap and
Sealing ring, which is set together, simplifies technique, and directly bottle cap is tightened on bottle and reaches sealing effect, and behind Kaifeng again
Tighten bottle cap can continue keep obturation effect, sampling needle 3 can provide a variety of liquid measures and plurality of liquid simultaneously inject and it is non-interference,
It is not in contact before the injection, a sampling needle 3 can be equipped with two different liquid simultaneously, such as can be with fashionable dress absorbing liquid, grass
Standard acid solution reduces cost, especially for field work, reduces workload without being used separately different sampling needles,
One sampling needle can achieve the effect that multiple sampling needles, while difference can be arranged in the volume of each inner cavity, and injection volume can
To be flexibly arranged, two kinds of liquid can be also injected simultaneously, and injection volume can have low consumption of the liquid, big liquid measure, but injecting wall reading only needs
It is a kind of.
The structure of the sampling needle of the embodiments of the present invention 2 can also be applied to embodiment one and head space lid
Structure may be equally applicable for embodiment one.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent substitution, improvement and etc. done should be included in the utility model
Within the scope of protection.
Claims (6)
1. a kind of simple gas density measuring device, which is characterized in that including ml headspace bottle and sampling needle, the ml headspace bottle includes bottle
With the head space lid being closed together on the bottle, the bottle is interior to be equipped with gas absorbing liquid, and the sampling needle passes through the top
Sky lid is inserted into the ml headspace bottle；The sampling needle includes outer syringe, and interior syringe, the outer syringe is interior to be equipped with first inner chamber, institute
It states interior syringe to be located in first inner chamber, second inner chamber is equipped in the interior syringe, the first inner chamber and the second inner chamber are mutual
It not being connected to mutually, the outer syringe bottom end is connected with syringe needle, and the first inner chamber is connected with syringe needle respectively with the second inner chamber,
The first push rod is slidably equipped in first inner chamber, second inner chamber is slidably equipped with the second push rod, the first push rod slides over each other with the second push rod matches
It closes.
2. simple gas density measuring device according to claim 1, which is characterized in that head space lid includes head space lid, bullet
Property material made of sealing ring, the head space lid is equipped with internal thread, and the sealing ring is set to the top in the head space lid
Portion, the sealing ring include upper ring and round lower circle, the interior nose circle of the upper circle it is extending radially downward go out with the lower circle
The annular inner wall being connected, the outer nose circle of the upper circle it is extending radially downward go out annular outer wall, the inner wall, the upper circle and institute
It states outer wall and constitutes an annular groove together, the annular groove is used to accommodate the bottleneck of ml headspace bottle, the diameter and bottleneck of the annular groove
Diameter be adapted, the head space lid upper inside wall be equipped with ring-like card slot.
3. simple gas density measuring device according to claim 1, which is characterized in that the tube wall of the sampling needle is equipped with
Scale.
4. simple gas density measuring device according to claim 1, which is characterized in that the bottle wall of the ml headspace bottle, which is equipped with, carves
Degree.
5. simple gas density measuring device according to claim 1, which is characterized in that the bottom end of first push rod is equipped with
Pushing block, the pushing block are slidably installed in first inner chamber, and the pushing block is equipped with slide opening, and the bottom end of second push rod is equipped with push plate,
Second push rod passes through slide opening and the first push rod to be slidably connected, and push plate is slidably matched with second inner chamber.
6. simple gas density measuring device according to claim 1, which is characterized in that the syringe needle far from liquid outlet one
End is connected with cushion chamber, and the opening area of the cushion chamber is more than the liquid outlet area of first inner chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721375473.5U CN207798767U (en) | 2017-10-13 | 2017-10-13 | A kind of simple gas density measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721375473.5U CN207798767U (en) | 2017-10-13 | 2017-10-13 | A kind of simple gas density measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207798767U true CN207798767U (en) | 2018-08-31 |
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ID=63275237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721375473.5U Active CN207798767U (en) | 2017-10-13 | 2017-10-13 | A kind of simple gas density measuring device |
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| CN (1) | CN207798767U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110327995A (en) * | 2019-07-23 | 2019-10-15 | 公安部物证鉴定中心 | Combustion residue hermetically sealed can |
| CN114054110A (en) * | 2021-11-17 | 2022-02-18 | 芜湖天弋能源科技有限公司 | Kit and method for testing HF content in electrolyte |
-
2017
- 2017-10-13 CN CN201721375473.5U patent/CN207798767U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110327995A (en) * | 2019-07-23 | 2019-10-15 | 公安部物证鉴定中心 | Combustion residue hermetically sealed can |
| CN110327995B (en) * | 2019-07-23 | 2021-11-30 | 公安部物证鉴定中心 | Combustion residue seal pot |
| CN114054110A (en) * | 2021-11-17 | 2022-02-18 | 芜湖天弋能源科技有限公司 | Kit and method for testing HF content in electrolyte |
| CN114054110B (en) * | 2021-11-17 | 2022-10-11 | 芜湖天弋能源科技有限公司 | Kit and method for testing HF content in electrolyte |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220624 Address after: Shop 209b-1, no.180-1, Tianyuan Road, Tianhe District, Guangzhou, Guangdong 510000 Patentee after: Guangzhou Unique Biotechnology Co.,Ltd. Patentee after: Bio source biotechnology (Shenzhen) Co., Ltd Address before: Shop 209b-1, no.180-1, Tianyuan Road, Tianhe District, Guangzhou, Guangdong 510000 Patentee before: Guangzhou Unique Biotechnology Co.,Ltd. |